CVE-2020-0235

In crus_sp_shared_ioctl we first copy 4 bytes from userdata into "size" variable, and then use that variable as the size parameter for "copy_from_user", ending…

published June 16, 2020

CVSS
—
EPSS
0%
Percentile
37.4
In the wild
Unconfirmed
What it is

⚠️ An unsuspecting user data copy can lead to serious memory woes! The way data is mishandled here is like putting the wrong ingredients in a recipe, causing everything to go haywire. 🍳 Think of it as a restaurant that misreads a customer's order, adding too much spice where it doesn’t belong. This tiny mix-up can mess up the entire dish, just like how the wrong size parameter can overwrite crucial memory addresses. If an attacker exploits this flaw, they could manipulate memory in unexpected ways, potentially causing crashes or unexpected behavior. In a worst-case scenario, this could lead to system instability or unauthorized data access! Yikes! 🔥

Put simply

Think of it as a restaurant that misreads a customer's order, adding too much spice where it doesn’t belong. This tiny mix-up can mess up the entire dish, just like how the wrong size parameter can overwrite crucial memory addresses. The vulnerability occurs in the 'crus_sp_shared_ioctl' function, where a 4-byte copy from user data is misused as the size for a buffer copy operation, resulting in memory corruption beyond the intended structure.

What to do

If an attacker exploits this flaw, they could manipulate memory in unexpected ways, potentially causing crashes or unexpected behavior. In a worst-case scenario, this could lead to system instability or unauthorized data access! Yikes! 🔥 Developers should audit their user data handling in specific kernel versions, ensuring proper size validation before memory operations. Consider patching your kernel to mitigate this vulnerability and get those safeguards in place! 🛡️ You've got this! Keep those systems safe and sound! 😊💪

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00443 · 37.4th percentile
Published
2020-06-16T13:31Z
EPSS history
Timeline
  • 16 JUN 13:31Z
    In crus_sp_shared_ioctl we first copy 4 bytes from userdata into "size" variable, and then use that variable as the size parameter for "copy_from_user", ending…
    cvelistv5